Safety gate-fastener for elevator-shafts.



D. G. ALSOP.

SAFETY GATE PASTENER FOB ELEVATOR SHAFTS.

AYPLIOATIOH FILED MAY 7, 1913.

1,084,523. Patented Jan 13, 19m

2 BERNIE-SHEET 1.

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D. G. ALSOP. smm um: PASTENBB ron ELEVATOR smr'rs.

APPLICATION FILED MAY 7, 1913.

Patented Jan. 13, 1914.

2 SHEETBSHEET 2.

JET/7.2.

DANIEL G.

ALSOP, 0F JEROME, PENNSYLVANIA.-

I SAFETY GATE-FASTENER FOR ELEVATOR-SHAFTS.

Specification of Letters Patent.

Patented Jan. 13,1914.

Application filed May 7, 1913. Serial No. 766,181.

To all whom'it may concern:

Be it known that 1, DANIEL Gr. Ansor, a citizen of the United States, residing at Jerome, in the county of Somerset and State of Pennsylvania, have invented new and useful Improvements in. Safety Gate- Fasteners for Elevator-Shafts, of which the following is a specification.

The invention provides novel means for securing the doors between landings and the shaft of an elevator so at to prevent opening of such doors from a landing and the fatality incident to a person dropping into the shaft when the car is not opposite the landing.

The invention provides simple and effective locking means for adjacent doors whereby when one of such doors is released to admit of ingress to or egress from the car the other door is securely locked, thereby preventing the opening of the same at the landing, the locking means embodying mutually cooperating parts whereby one of such parts forms a lock for the other part.

The invention consists of the novel features, details of ticn-of parts, which hereinafter will be more particularly set forth, illustrated in the accompanying drawings, and pointed out in the appended claims.

Referring to the drawings, forming a part of the specification, Figure l is a view in elevation of an elevator provided with adja cent doors for each landing and embodying door locking means embodying the invention. Fig. 2 is a top plan View of the locking means and doors secured thereby. Fig. 3 is a section on the line wa of Fig. 2, showing the relative position of the parts of the locking mechanism when both doors are secured. Fig. 4 is a view similar to Fig. 8, showing the relation of the parts when one of the locking devices is released and acts as locking means for the other looking element. Fig. 5 is a perspective view of one of the shafts provided with the door locking means and the rotary locking elevment.

Corresponding and like parts are referred to in the following description, and indicated in all the views of the drawings, by the same reference characters.

The elevator shaft is designated by the numeral 1 and may be of any construction,

construction and combinaand in the present instance is of a size to receive two cars 2 which are connected by means of a cable so that upon the ascent of one car the other car descends. This arrangement is not essential as the cars may be independently operated, in which case one car will not serve as a counterbalance for the other. doors 3 are provided, the same being arranged to move in any convenient way, but for the sake of simplicity of illustration the doors are shown as hinged to swing outward from their outer ends. \Vhen the doors are closed they are made secure by locking means which form present invention.

The locking mechanism for a pair of doors at the landing comprises two shafts sand 5. These shafts have a parallel relation and are mounted so as to occupy a position between the cars 2. Each of the shafts .is provided at its outer end with a crank handle 6 and with an arm 7 a short distance from the' crank handle. The arm 7 and crank handle 6 occupy a different relative angular position. These parts 6 and 7 constitute both locking means for a door and operating means for releasing the door. The crank handle 6 is adapted to be operated from the landing when it is required to release the door to admit of access being had to the car from the landing. The arm 7 is adapted to be operated from the car when it is required to release the door to admit of egress from the car to the landing. A disk 8 is secured to the inner end of each of the shafts so as to rotate therewith and is provided in an edge with a notch whereby two shoulders 9 and 10 are formed and which shoulders are arranged to engage a projection 11 of a looking member 12. When the doors are locked the parts 6 and 7 occupy a position to engage opposite sides of the door so as to prevent such door from being swung in either direction. The projection 11 of the locking member enters the notch of the disk and engages both shoulders9 and 10, thereby preventing rotation of the disk 8 and the shaft connected therewith. The locking member 12 preferably consists of a spring and normally occupies a position to extend across the path of the car to be engaged thereby so that when the car is at a landing the locking member 12 is pressed inward and the essential part of the.

At each of the landings two moves the projection 11 out of the notch of the disk 8 so that the shaft of such disk may be turned either by means of the crank handle 6 or the arm 7, thereby releasing the door which when opened admits of ingress to or egress from the car. The shafts 4 and 5 with their disks 8 are so placed that the edges of the disks come close together and the notches thereof are in opposition when the shafts 4 and 5 are turned to lock both doors. When the locking member 12 arranged to be engaged by one of the cars is pressed upon the projection 11 thereof enters the notch of the disk 8 receiving the projection 11 of the other locking member, as indicated most clearly in Fig. 4, thereby preventing opening of the door at the landing of the pair which is released by the car at such landing. It will thus be understood that when a car reaches a landing the door leading to such car is the one which can be released, the other door being doubly locked by both projections 11 of the locking members 12 and by the disk 8 which is turned when releasing the proper door, so that a person may pass from or onto the car. The locking members 12 are yieldable and preferablyi. consist of springs, thereby admitting of the bars passing freely by the same when it is not required to make a stop at a landing.

From the foregoing description, taken in connection with the accompanying drawings, the advantages of the construction and of the method of operation will be readily apparent to those skilled in the art to which the invention appertains, and while I have described the principle of operation of the invention, together with the devi e which I now consider to be the best cm 'mdinurnt thereof, I desire to have it understood thatthe device shown is n'icrcly illustrative, and that such changes may be made when desired as are within the scope of the claims appended hereto.

Having thus described the invention what is claimed as new, is:

1. In an elevator and in combination with the car, and a door for closing the entrance to the shaft at a landing, a disk having a notch forming adjacent shoulders, a locking member arranged in the path of the car and provided with a projection to enter the notch of the disk and engage both shoulders thereof, and means connected with said disk and adapted to engage the before mentioned door for securing the same.

2. In an elevator and in combination with a pair of doors for closing entrances to the shaft, 21. pair of rotary men 5, means connected with such members for engaging the respective doors to secure the same, and locking members arranged in the path of cars mounted in the shaft to be operated thereby, said locking members being arranged to engage the before men tioned rotary members to secure the same against a turning movement and one of the rotary memhers when released and turned serving further as locking mears to prevent turning of the other rotary member.

3. Door locking means for elevators, the same comprising closely related disks, each of such disks having an edge portion notched to provide angularly disposed shoulders, said disks normally occupying a position with the notches in opposition, oppositely disposed locking members having projecting portions to enter the notches of the disks, one of such disks when turned serv ing to further lock the other disk against rotation, and means connected with the disks to engage and Mft'lllt the doors,

In testinn'my whereof atlix my ignature in presence of t no witnesses.

Witnesses:

\V. F. Bnosn, Cnas. P. Noon. 

